4.7 Review

Progress and challenges: Review for direct liquid fuel cell

Journal

INTERNATIONAL JOURNAL OF ENERGY RESEARCH
Volume 45, Issue 5, Pages 6644-6688

Publisher

WILEY
DOI: 10.1002/er.6353

Keywords

challenges; commercialization; direct liquid fuel cell; progress

Funding

  1. Universiti Kebangsaan Malaysia [DIP-2020-015]

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DLFCs have superior energy density and small fuel container size, but face challenges such as expensive catalysts and fuel security. Further research is needed to improve performance and market penetration.
Direct liquid fuel cell (DLFC) is one of the leading fuel cell types due to their great features of superior energy density, modest configuration, small size in fuel container, immediate boosting, and effortless storage and carriage. Commercially used liquid fuel types are prepared using alcohols, such as methanol or ethanol, glycol, and acids. DLFCs face great challenges although they are potentially far-reaching depending on the expensive catalysts and the use of high-loading catalyst. More questions that should be addressed to ensure excellent DLFC performance include cathode flooding, fuel crossover, numerous side yield production, fuel security, and unverified elongated-duration robustness. Further studies need to be carried out to ensure the continuous improvement of the quality of DLFCs' performance and their penetration in the commercial market. To date, direct liquid fuel cells made of methanol and ethanol have been successfully produced in commercial scale, but other types of DLFCs are still under study. In this review, introduction to DLFC will be discussed by covering work and commercialization as well as recent progress and challenges encountered.

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